࡮ታᣉ⺖㗴⇟ภ㧦2006B0151࡮ታᣉ⺖㗴ฬ㧦Ꮧ࿯㘃-Mg-Ni ♽ว㊄ߩర⚛⟎឵ߦࠃࠆዪᚲ᭴ㅧߩ⸃᣿
࡮ታ㛎⽿છ⠪ᚲዻᯏ㑐෸߮᳁ฬ㧦㧔ᩣ㧕ࠫ࡯ࠛࠬ࡮࡙ࠕࠨࠦ࡯ࡐ࡟࡯࡚ࠪࡦ 㤥⪾ේታ࡮૶↪ࡆ࡯ࡓ࡜ࠗࡦ㧦BL19B2࡮౒หታ㛎⠪㧦㧔ᩣ㧕ࠫ࡯ࠛࠬ࡮࡙ࠕࠨࠦ࡯ࡐ࡟࡯࡚ࠪࡦ✎↰ᱜᴦ㧘⪭ว⺈ੑ㇢㧘㊄ᧄቇ㧘ដ⼱ᔘม㧘᧘౰ᐔ㧘የፒື਽㧔⁛㧕↥ᬺᛛⴚ✚ว⎇ⓥᚲႺື↵㧘᫪ਅᱜౖ‫ޤ⸒✜ޣ‬
Ꮧ࿯㘃-Mg-Ni ♽ว㊄ߪᓥ᧪ߩ AB5 ♽ว㊄ߦᲧߴߡ᳓⚛ๆ⬿ኈ㊂߇ᄢ߈ߊ᦭ᦸߥ᳓⚛ๆ⬿᧚ᢱߢ޽ࠅ,౐ᣇ᥏ Ce2Ni7 ဳ⋧㧘⪉㕙૕᥏ Ce5Co19 ဳ⋧߅ࠃ߮౐ᣇ᥏ Pr5Co19 ဳ⋧ߥߤ AB5 ࡙࠾࠶࠻㧔CaCu5 ဳ᭴ㅧ㧕
ߣ A2B4 ࡙࠾࠶࠻㧔Laves ᭴ㅧ㧕߆ࠄߥࠆ⒳‫ߩޘ‬Ⓧጀ᭴ㅧ⋧߇ሽ࿷ߒߡ޿ࠆ [1-3]㧚ᚒ‫ ߪޘ‬La-Mg-Ni-Coߩ⚵ᚑࠍࡌ࡯ࠬߦ Ni ߩ৻ㇱࠍ Mn ߹ߚߪ Al ߢ, La ߩ৻ㇱࠍ Pr ߹ߚߪ Y ߢ⟎឵ߔࠆߎߣߦࠃࠅ⋧᭴ㅧ߇ᄢ߈ߊᄌൻߒ,หᤨߦ᳓⚛ๆ⬿․ᕈ߽ᄌൻߔࠆߎߣࠍߎࠇ߹ߢߦႎ๔ߒߡ޿ࠆ [4, 5] 㧚ᧄ⎇ⓥߢߪ᳓⚛
ๆ⬿೨ᓟߩว㊄ߦߟ޿ߡ᡼኿శ XRD ᷹ቯ߅ࠃ߮ XAFS ᷹ቯࠍ߅ߎߥ޿, ర⚛⟎឵߅ࠃ߮᳓⚛ൻߩዪᚲ᭴ㅧ߳ߩᓇ㗀ߦߟ޿ߡߐࠄߦ⹦⚦ߥ⸃ᨆࠍ߅ߎߥߞߚ㧚‫ޣ‬ታ㛎‫ޤ‬⒳‫ߩޘ‬ว㊄(RE,Mg)(Ni,Co, Mn,Al)b 㧔RE㧦Ꮧ࿯㘃㧘3.0b5.0㧕ࠍ㜞๟ᵄ⺃ዉṁ⸃ᴺߦࠃࠅ૞⵾ߒߚ㧚☳⎈ᓟ㧘ࠫ࡯ࡌ࡞࠷ဳⵝ⟎ߦࠃࠅ 80 ͠ߦ߅ߌࠆ᳓⚛ๆ⬿․ᕈࠍ⹏ଔߒߚ㧚᳓⚛ๆ⬿೨ᓟߩว㊄ߦߟ޿ߡ᡼኿శ㨄✢㧔SPring8 BL19B2㧕ࠍ↪޿ߡ XRD ᷹ቯ㧔ᵄ㐳 0.7Έ㧕߅ࠃ߮ XAFS ᷹ቯࠍ߅ߎߥߞߚ㧚
XRD ↪ࠨࡦࡊ࡞ߪ ĳ0.3mm ߩࠟ࡜ࠬࠠࡖࡇ࡜࡝࡯ߦว㊄☳ᧃࠍኽ౉ߒߡ૞⵾ߒ㧘ᵄ㐳 0.7Έߢࠬࡇ࠽࡯
ࠍ૶↪ߒߡ᷹ቯߒߚ㧚ᓧࠄࠇߚ XRD ࡄ࠲࡯ࡦ߆ࠄ↢ᚑ⋧ߩหቯࠍⴕ޿㧘 Rietveld ᴺ㧔૶↪࠰ࡈ࠻㧦
RIETAN2000 [6]㧕ߦࠃࠅ㧘ฦว㊄⋧ߦߟ޿ߡᩰሶቯᢙࠍ♖ኒൻߒ㧘ሽ࿷ഀวࠍ᳞߼ߚ㧚XAFS ᷹ቯߪ La-K㧘
Ni-K㧘Co-K ߅ࠃ߮ Mn-K ๆ෼┵ߦߟ޿ߡㅘㆊᴺ߅ࠃ߮Ⱟశᴺߦࠃࠅ߅ߎߥߞߚ㧚‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬0% Mg ㊂ߩ⇣ߥࠆ La0.8-xPr0.2MgxNi3.45Co0.2(Mn,Al)0.15

AB2 2:7H

㧔 0.12  x  0.2㧕 ว ㊄ ߦ ߟ ޿ ߡ XRD ࡄ ࠲ ࡯ ࡦߩࠇߚฦ⋧ߩሽ࿷ഀวࠍ࿑㧝ߦ␜ߔ㧚Mg ㊂ߩᦨ߽ᄙx = 0.18

޿ x = 0.2 ߩว㊄ߪ஍ᨆ⋧ߩ AB5 ⋧㧔CaCu5 ဳ᭴ㅧ㧕x = 0.16

߇㧘Mg ㊂ࠍ x = 0.18 એਅߦᷫዋߐߖࠆߎߣߢ AB2⋧ߪ஍ᨆߒߥߊߥࠅ AB5 ⋧ߩሽ࿷ഀว߽⚂ 15%ߦᄢ

ሽ࿷ഀว㩿㫄㪸㫊㫊㩼䋩
40%
60%
80%

x = 0.15100%

AB5x = 0.2

Rietveld ⸃ᨆ㧔૶↪࠰ࡈ࠻㧦RIETAN2000㧕߆ࠄᓧࠄ߇ 30%એ਄↢ᚑߒ AB2 ⋧㧔C15b ᭴ㅧ㧕߽஍ᨆߒߚ

20%

5:19R

5:19H

x = 0.12߈ߊૐਅߒߚ㧚x  0.18 ߩว㊄ߪ Ce5Co19 ⋧㧔5:19R㧕
߹ߚߪ Pr5Co19 ⋧㧔5:19H㧕߆ࠄਥߦ᭴ᚑߐࠇߡ޿ߚ‫ޕ‬࿑㧝 La0.8-xPr0.2MgxNi3.45Co0.2(Mn,Al)0.15㧔0.12 x  0.2㧕ว㊄ߦ߅ߌࠆฦ⋧ߩሽ࿷ഀว䋭㩷㪈㪈㪉㩷䋭

720(a)(b)

V (㷬 )

1070
33V (㷬 )

1080

1060

1050
0.1

0.15

710

700

0.2

0.1

0.15x0.2x࿑㧞 La0.8-xPr0.2MgxNi3.45Co0.2(Mn,Al)0.15㧔0.12  x  0.2㧕ว㊄ߦ߅ߌࠆ(a) 5:19R ⋧ߣ(b)5:19H⋧ߩᩰሶ૕Ⓧฦว㊄ߩ 5:19R ⋧߅ࠃ߮ 5:19H ⋧ߩᩰሶ૕Ⓧࠍ࿑⴫㧝 La0.64Pr0.2Mg0.16Ni3.45Co0.2(Mn,Al)0.15 ว㊄ߩ
5:19R ⋧ߩฦࠨࠗ࠻ߩභ᦭₸ߣಽ₸ᐳᮡ

㧞(a)㧘(b)ߦ␜ߔ‫ޕ‬Mg ㊂ߩჇടߣߣ߽ߦ 5:19R ⋧߅㧔M=Ni,Co,Mn㧕ࠃ߮ 5:19H ⋧ߩᩰሶ૕Ⓧߪᷫዋߒߚ㧚ߎࠇߪ Mg
ߩේሶඨᓘ㧔1.602Έ㧕ߪ La ߩේሶඨᓘ㧔1.877Έ㧕 AtomߦᲧߴߡዊߐߊ㧘La ࠨࠗ࠻߇ㇱಽ⊛ߦ Mg ߢ⟎឵ߐࠇࠆߎߣߦࠃࠆ߽ߩߣ⠨߃ࠄࠇࠆ㧚x = 0.16 ߩว㊄ߩ 5:19R ⋧ߩฦࠨࠗ࠻ߩභ᦭₸ߣಽ₸ᐳᮡࠍ⴫㧝ߦ㧘⚿᥏᭴ㅧࠍ࿑㧟ߦ␜ߔ㧚Mg ߪA2B4 ࡙࠾࠶࠻ౝߩ La ࠨࠗ࠻㧔6c2 ࠨࠗ࠻㧕ࠍ⟎឵ߒ㧘Al ߪ AB5 ࡙࠾࠶࠻-AB5 ࡙࠾࠶࠻㑆ߩ Ni ࠨࠗSite
RE1
3aRE2
6c1
RE3/Mg1 6c2
M1/Al13bM2/Al2
6c3
M3/Al3
6c4
M4/Al46c5
M5/Al518h1
M6/Al6
18h2

g
1.0
1.0
0.66/0.34
1.0/0.0
1.0/0.0
1.0/0.0
0.94/0.06
0.92/0.08
0.99/0.01x00000000.5071
0.4984y000000
0-x-xz00.0818
0.15330.50.2497
0.33310.41750.04150.1248࠻㧔18h1 ࠨࠗ࠻㧕߹ߚߪ AB5 ࡙࠾࠶࠻ౝߩ Ni ࠨࠗ࠻㧔6c5 ࠨࠗ࠻㧕ࠍਥߦ⟎឵ߒߡ޿ࠆߎߣ߇ࠊ߆AB5ߞߚ㧚ઁߩว㊄ߦ㑐ߒߡ߽ห᭽ߥ௑ะ߇⷗ࠄࠇߚ‫ޕ‬

AB5La ߇ේሶඨᓘߩዊߐ޿ Mg ߢ⟎឵ߐࠇ㧘Ni ߇ේሶA2B4

ඨᓘߩᄢ߈ߥ Al ߢ⟎឵ߐࠇࠆߎߣߦࠃࠅ AB5 ࡙࠾

LaLa, Mg
Ni, Co, Mn, Al

࠶࠻-A2B4 ࡙࠾࠶࠻㑆ߩ a ゲᣇะߩᩰሶߩᄢ߈ߐߩ

AB518h1 䉰䉟䊃㆑޿߇ዊߐߊߥࠅ‫ޔ‬Ⓧጀ᭴ㅧ⋧߇቟ቯߦሽ࿷ߢ߈

AB56c5 䉰䉟䊃ࠆ߽ߩߣ⠨߃ࠄࠇࠆ㧚߹ߚ㧘ฦ Ni ࠨࠗ࠻ߩ Al භ

AB518h2 䉰䉟䊃᦭₸ߪᦨᄢߢ g = 0.3 ⒟ᐲߣ਄㒢߇⷗ࠄࠇ㧘ㆊ೾ߩ

A2B4

Al ߪ AB5 ஍ᨆ⋧ਛߦᄙߊሽ࿷ߒߡ޿ߚߎߣ߆ࠄ㧘

AB5Al ⟎឵㊂ߣဋ⾰ᕈߩ⋧㑐߇᣿ࠄ߆ߣߥߞߚ㧚

AB5ฦว㊄ߩ᳓⚛ๆ⬿᡼಴᷹ቯߦ߅ߌࠆ᳓⚛ๆ⬿ᤨ

AB5ߩ PCT ᦛ✢㧔࿶ജ㧙⚵ᚑ╬᷷✢㧕ࠍ࿑㧠ߦ␜ߔ㧚

A2B4ᐔⴧ᳓⚛࿶ߪ Mg ㊂ߩჇടߣߣ߽ߦ਄᣹ߒߡ޿ࠆ㧚

AB5ߎࠇߪ਄ߢㅀߴߚࠃ߁ߦ La ߇ࠃࠅේሶඨᓘߩዊAB5ߐ޿ Mg ߢ⟎឵ߐࠇࠆߎߣߦࠃࠅᩰሶ૕Ⓧ߇ᷫዋߔࠆߎߣߦࠃࠆ߽ߩߣ⠨߃ࠄࠇࠆ㧚߹ߚ㧘x = 0.2

6c2 䉰䉟䊃
6c1 䉰䉟䊃3a 䉰䉟䊃࿑㧟 La0.64Pr0.2Mg0.16Ni3.45Co0.2(Mn,Al)0.15 ว㊄ߩ߅ࠃ߮ x = 0.12 ߩว㊄ߪࡊ࡜࠻࡯ㇱߩ௑߈߇ᄢ߈

䋭㩷㪈㪈㪊㩷䋭

5:19R⋧ߩ⚿᥏᭴ㅧߊ᳓⚛ๆ⬿㊂߇ዋߥ޿㧚ߎࠇߦኻߒߡ x = 0.15㨪
0.18 ߩว㊄ߪࡊ࡜࠻࡯߇Ყセ⊛ᐔမߢ޽ࠅ㧘᳓⚛
ๆ⬿㊂߽ H/M > 0.9 ߣᄢ߈ߊ㧘᳓⚛ๆ⬿ว㊄ߣߒߡㆡߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚᳓⚛ൻ೨ᓟߩ XRD ᷹ቯ⚿ᨐ߆ࠄ᳓⚛ൻߦߣ߽ߥ߁ᩰሶ⤘ᒛߦߟ޿ߡᬌ⸛ߒߚ㧚x = 0.16 ว㊄ߩ႐ว㧘᳓⚛ൻߦࠃࠆᩰሶ૕ⓍߩჇട₸ߪ 5:19H ⋧㧘
5:19R ⋧ߩ޿ߕࠇ߽ 20.5㨪20.6%ߢ޽ߞߚ㧚᳓⚛ൻ೨ߩ 5:19R ⋧ߩ La-La 㑆ߩේሶ㑆〒㔌ߪ AB5 ࡙࠾
࠶࠻-AB5 ࡙࠾࠶࠻㑆㧔3a ࠨࠗ࠻-6c1 ࠨࠗ࠻㑆㧕ߢ
3.97Έ㧘AB5 ࡙࠾࠶࠻-A2B4 ࡙࠾࠶࠻㧔6c1 ࠨࠗ࠻࿑ 㧠 La0.8-xPr0.2MgxNi3.45Co0.2(Mn,Al)0.15 㧔 0.12-6c2 ࠨࠗ࠻㑆㧕㑆߇ 3.47Έߢ޽ߞߚߩߦኻߒ㧘᳓x  0.2㧕ว㊄ߩ80͠ߦ߅ߌࠆPCTᦛ✢⚛ൻᓟߪߘࠇߙࠇ 4.18Έ㧘3.85ΈߣჇടߒߚ㧚AB5࡙࠾࠶࠻-AB5 ࡙࠾࠶࠻㑆ࠃࠅ߽ AB5 ࡙࠾࠶࠻-A2B4 ࡙࠾࠶࠻㑆ߩᣇ߇ La-La 〒㔌ߩჇട߇ᄢ߈ߊ㧘ߎߩߎߣߪ᳓⚛ൻߦࠃࠆ c ゲᣇะߩᩰሶ⤘ᒛ߇ AB5 ࡙࠾࠶࠻ࠃࠅ߽ A2B4 ࡙࠾࠶࠻ߦ߅޿ߡᄢ߈޿ߎߣࠍ␜
ߒߡ߅ࠅ㧘A2B4 ࡙࠾࠶࠻߇ࠃࠅᄙߊߩ᳓⚛ࠍๆ⬿ߔࠆߣ⠨߃ࠄࠇࠆ㧚Mg ߪ AB5 ࡙࠾࠶࠻ߢߪߥߊ A2B4࡙࠾࠶࠻ࠍ⟎឵ߔࠆߎߣ߆ࠄ㧘Mg ⟎឵㊂ߦࠃࠅ᳓⚛ๆ⬿․ᕈ߇ᄢ߈ߊᄌൻߔࠆߎߣ߇⺑᣿ߢ߈ࠆ㧚㪣㪸㪉㪌㪤 㫅㪢㪣 㪸㪢㪥 㫀㪢㪚㫆㪢

㪈㪇

㪊㪅㪌

Ni KLa K㪌᳓⚛ൻ೨㪊|FT|Co K㪈㪌᳓⚛ൻ೨᳓⚛ൻᓟ㪋

Mn K㪉㪇

|FT|㪋㪅㪌᳓⚛ๆ⬿ว㊄㪘㪉㪅㪌㪉㪈㪅㪌᳓⚛ൻᓟ㪈㪇㪇㪈㪉㪊㪋㪌㪍R䋨㷬䋩㪇㪅㪌㪇㪇㪈㪉㪊㪋㪌㪍࿑㧡 La0.8Mg0.2Ni3.25Co0.3(MnAl)0.15ว㊄ߩLa K,R䋨㷬䋩࿑ 㧢 La0.8Mg0.2Ni3.25Co0.3(MnAl)0.15 ว ㊄ ߩ ᳓

Ni K, CoK, MnKๆ෼┵ㄭறߩEXAFSࠬࡍ⚛ൻ೨ᓟߩLa Kๆ෼┵ㄭறEXAFSࠬࠢ࠻࡞ߩࡈ࡯࡝ࠛᄌ឵⚿ᨐࡍࠢ࠻࡞ߩࡈ࡯࡝ࠛᄌ឵⚿ᨐ

Pr5Co19 ⋧㧘Ce2Ni7 ⋧㧘CaCu5 ⋧ࠍߘࠇߙࠇਥ⋧ߣߔࠆว㊄ A㧔La0.8Mg0.2Ni3.25Co0.3(MnAl)0.15㧕㧘ว㊄ B
㧔La0.8Mg0.2Ni3.4Co0.3㧕㧘ว㊄ C㧔LaNi5㧕ߩ 3 ⒳㘃ߩว㊄ߦߟ޿ߡ XAFS ᷹ቯࠍⴕ޿ᰴߩ⚿ᨐࠍᓧߚ㧚Ⓧጀ᭴ㅧࠍ᭴ᚑߔࠆ AB5 ࡙࠾࠶࠻ߣ A2B4 ࡙࠾࠶࠻ߣหߓ᭴ㅧࠍ᦭ߔࠆ LaNi5 ߣ LaNi2 ߦߟ޿ߡ FEFF ࠪࡒࡘ࡟࡯࡚ࠪࡦࠍ߅ߎߥߞߚ㧚La ߹ࠊࠅߩዪᚲ᭴ㅧߦ㑐ߒߡว㊄ C ߪ╙ 1 ㄭធ㧘╙ 2 ㄭធߩࡇ࡯ࠢࠍ⏕⹺ߔࠆߎߣ߇ߢ߈㧘ว㊄ A ߅ࠃ߮ B ߦߟ޿ߡ߽╙ 1 ㄭធߩࡇ࡯ࠢࠍ⏕⹺ߔࠆߎߣ߇ߢ߈ߚ㧚৻ᣇ㧘Ni߹ࠊࠅߩዪᚲ᭴ㅧߦ㑐ߒߡ߽޿ߕࠇߩว㊄ߦߟ޿ߡ߽╙ 1 ㄭធߩࡇ࡯ࠢࠍ⏕⹺ߔࠆߎߣ߇ߢ߈ߚ㧚ว㊄A ߦߟ޿ߡߪ La ๟ㄝߩ႐วߣ⇣ߥࠅ╙ 2 ㄭធએ㆙ߩ᭴ㅧ߇⷗߃߆ߌߡ޿ࠆߎߣ߇ࠊ߆ߞߚ㧚ว㊄ A ߦߟ޿ߡ La-K㧘Ni-K㧘Co-K ߅ࠃ߮ Mn-K ๆ෼┵ㄭறߩ EXAFS ࠬࡍࠢ࠻࡞ߩࡈ࡯࡝ࠛᄌ឵ࠍ࿑㧡ߦ␜ߔ㧚Mn ߩዪᚲ᭴ㅧߪ La ࠃࠅ߽ Ni,Co ߩዪᚲ᭴ㅧߦㄭ߆ߞߚ㧚ߎߩߎߣߪ Mn ߪ La ࠨࠗ࠻ߢߪߥߊ Ni ࠨࠗ࠻ࠍ⟎឵ߒߡ޿ࠆߎߣࠍ␜ໂߒߡ޿ࠆ㧚߹ߚ᳓⚛ൻ೨ᓟߩ La-K EXAFS ࠬࡍࠢ࠻࡞ࡈ࡯࡝ࠛᄌ឵ߩᄌൻ䋭㩷㪈㪈㪋㩷䋭㧔࿑㧢㧕߆ࠄ㧘᳓⚛ൻߦࠃࠅ La ๟ㄝߩዪᚲ᭴ㅧ߇ᄢ߈ߊᄌൻߔࠆߎߣ߇ࠊ߆ߞߚ㧚৻ᣇ㧘Ni ߅ࠃ߮ Coߦ㑐ߒߡߪ᳓⚛ൻ೨ᓟߢࡇ࡯ࠢᒝᐲߪᷫዋߒߡ޿ࠆ߇᭴ㅧߪᱷߞߡ߅ࠅ㧘Ni ߩ᭴ㅧ߇޽ࠆ⒟ᐲ⛽ᜬߐࠇߚ߹߹ La ߇᳓⚛ߩᓇ㗀ࠍฃߌߡ᭴ㅧ߇ᄌൻߔࠆߎߣ߇␜ໂߐࠇߚ㧚‫ޤ߼ߣ߹ޣ‬ ᡼኿శ XRD ᷹ቯ߅ࠃ߮ XAFS ᷹ቯࠍ߅ߎߥ޿㧘Ꮧ࿯㘃-Mg-Ni ♽ว㊄ߦ߅ߌࠆ⟎឵ర⚛ߩ⋧᭴ㅧ߅ࠃ߮᳓⚛ๆ⬿․ᕈ߳ߩᓇ㗀ࠍᬌ⸛ߒߚ㧚XRD ᷹ቯߩ⚿ᨐ߆ࠄ Mg ⟎឵㊂ߩᄌൻߦߣ߽ߥ޿ว㊄ߩ᭴ᚑ⋧ߩᄌൻߪᲧセ⊛ዊߐ޿߽ߩߩ㧘᳓⚛ๆ⬿․ᕈ߇ᄢ߈ߊᄌൻߔࠆߎߣ߇ࠊ߆ߞߚ㧚ߎߩߎߣߪ᳓⚛ๆ⬿ᤨߦ
A2B4 ࡙࠾࠶࠻߇ AB5 ࡙࠾࠶࠻ߦᲧߴߡᄙߊ᳓⚛ࠍๆ⬿ߒᄢ߈ߊ⤘ᒛߔࠆ߇㧘Mg ߇ A2B4 ࡙࠾࠶࠻ࠍ⟎឵ߔࠆߎߣߢ․ᕈ߇ᄌൻߔࠆߚ߼ߣ⠨߃ࠄࠇࠆ㧚৻ᣇ XAFS ᷹ቯ߆ࠄ Mn ߪ Al ߣห᭽ߦ Ni ࠨࠗ࠻ࠍ⟎឵ߔࠆߎߣ߇ࠊ߆ࠅ㧘᳓⚛ൻߦߣ߽ߥ߁ዪᚲ᭴ㅧߩᄌൻߪ Ni ߩ߹ࠊࠅࠃࠅ߽ La ߩ߹ࠊࠅߢᄢ߈ߊ㧘La߇᳓⚛ߩᓇ㗀ࠍฃߌ߿ߔ޿ߎߣ߇␜ໂߐࠇߚ㧚ߎࠇࠄߪ᳓⚛ๆ⬿ߦߣ߽ߥ߁Ⓧጀ᭴ㅧߩᄌൻߦ㑐ߔࠆᣂߚߥ⍮⷗ߢ޽ࠅ㧘੹ᓟ㜞ኈ㊂ߢ⠴ਭᕈߦߔߋࠇߚ᳓⚛ๆ⬿᧚ᢱࠍ⸳⸘࡮㐿⊒ߒߡ޿ߊ਄ߢᓎ┙ߟ߽ߩߣᦼᓙߐࠇࠆ㧚‫⻢ޣ‬ㄉ‫ޤ‬੹࿁ߩ XRD㧘XAFS ᷹ቯ߅ࠃ߮࠺࡯࠲⸃ᨆߦ޽ߚߞߡߪ㜞ノᐲశ⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ ↥ᬺ೑↪ផㅴቶߩ᧖ᶆᱜᵶ᭽㧘ᧄ㑆ᔀ↢᭽㧘૒⮮⋿⋥᭽㧘᧻ᧄᜏ਽᭽㧘ᐔጊ᣿㚅᭽ߦߏᜰዉߣߏදജࠍ㗂߈߹ߒߚ㧚ߎߩ႐ࠍ߅୫ࠅߒߡ߅␞↳ߒ਄ߍ߹ߔ㧚‫ޣ‬ෳ⠨ᢥ₂‫ޤ‬[1] K. Kadir, T. Sakai, and I. Uehara, J. Alloys Compds., 257, 115 (1997).
[2] T. Kohno, H. Yoshida , F. Kawashima , T. Inaba , I. Sakai , M. Yamamoto , and M. Kanda, J. Alloys Compds.,311, L5 (2000).
[3] H. Hayakawa, E. Akiba, M. Gotoh, and T. Kohno, Mater. Trans., 46, 1393 (2005)[4] ✎↰㧘ᐔᚑ 17 ᐕᐲ SPring-8 ᚢ⇛ᵴ↪ࡊࡠࠣ࡜ࡓ⺖㗴೑↪ႎ๔ᦠ㧔2005B㧕, pp.147-150.
[5] ㊄ᧄ㧘ដ⼱㧘የፒ㧘㤥⪾ේ㧘✎↰㧘Ⴚ㧘GS Yuasa Technical Report, 3(1), 20-25 (2006).
[6] F. Izumi and T. Ikeda, Mater. Sci. Forum, 321-324, 198 (2000)

䋭㩷㪈㪈㪌㩷䋭